Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
20008excellentexcellent11excellent
19007excellentexcellent11excellent
180012excellentexcellent11excellent
170011excellentexcellent21excellent
160016excellentexcellent11excellent
150013excellentexcellent11excellent
14008excellentexcellent11excellent
13008excellentexcellent11excellent
120012excellentexcellent11excellent
110010excellentexcellent11excellent
100010excellentexcellent11excellent
090012excellentexcellent21excellent
080017excellentexcellent31excellent
070022goodexcellent21excellent
060019excellentexcellent21excellent
050014excellentexcellent21excellent
040014excellentexcellent21excellent
030012excellentexcellent11excellent
020014excellentexcellent11excellent
010011excellentexcellent11excellent
000010excellentexcellent11excellent
230012excellentexcellent21excellent
220012excellentexcellent11excellent
210012excellentexcellent11excellent